SANTA CLARA >> Chris Borland, the 49ers’ leading tackler last season as a rookie replacement to Patrick Willis, is retiring because of concerns over head trauma, he told ESPN on Monday. Borland’s stunning retirement is the la...

SANTA CLARA, Calif. — His eyelids swollen from tears, seven-time Pro Bowl linebacker Patrick Willis bid farewell to football and called it one of his happiest days yet because he is leaving on his own terms. His tender, size-13 feet ...